You might enjoy reading POISON FROGS, W. Schmidt, F.W. Henkel, Professional Breeders Series. It is worth purchasing, or perhaps your local library will have it, or can obtain it for you. There is a short, but comprehensive chapter on Dendrobatid toxins. It is also a pretty good general "how to" book on Dendrobatids.
The poisonous Phyllobates species caught in nature do contain enough toxins in their skin glands to kill a man, but these toxins have to enter the body either through injuries such as broken skin, or through minor injuries in digestive tract. They don't pass through unbroken skin. The risk of poisoning with wild caught animals is low, provided they are not handled carelessly and not unduly molested. And as mentioned, they tend to lose their toxins in captivity, and captive bred darts are not toxic.
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Patty
Pahsimeroi, Idaho
4 D. auratus blue
6 D. galactonotus pumpkin orange splash back
7 D. imitator
6 D. leucomelas
6 D. pumilio Bastimentos
4 D. fantasticus
6 P. terribilis mint and organe
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus
2 P. lugubris